Ohm's law and resistance
1)Which Law explains the following? At constant temperature the current flowing through a conductor is directly proportional to the potential difference between its ends. 

2)What does the current through a wire depend on? 

3)Which of the following is an example for Ohmic resistor? 

4)What is reciprocal of resistivity called? 

5)Which of the following represent ohm’s law?

6)What is the potential difference required to pass a current of 5A through a metallic rod of resistance 10Ω?

7)Choose the correct statement from the alternatives?

8)Three resistors of resistances 25Ω, 50Ω, and 75Ω respectively are connected in series in a circuit. What is the effective resistance of the combination of the three resistors?

9)When N resistances each of value r are connected in parallel, then resultant resistance is R. What will be the total resistance if these resistors are connected in series?

10)If the voltage across a fixed value of resistance is increased five times, what will be the variation in current?


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